If staprun -c CMD or -x PID is invoked from within a container (even if privileged), but without --pid=host, the pid# passed in the STP_START message will reflect the container's namespace.  This needs to be converted to a host namespace pid, for inode-uprobes etc. to work.

runtime/transport/transport.c line 151

00151                 _stp_target = st->target;